Improvement in buttons



NITED "STATES ATENT rren.

GEORGE J. OAPEWELL, OF CHESHIRE, CONNECTICUT.

IMPROVEMENT IN BUTTONS.

To all whom it may concern:

Be it known that I, GEORGE J. CAPEWELL, of Cheshire, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Buttons; and that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.

This invention is in the nature of an improvement in that class of buttons designed to be attached to garments by a metallic fastening. The invention consists in constructing the flange of the shank of the button with a barb to prevent said button from unscrewing from the fastening; also, in forming a raised lip around the hole in the under shell of the but-.

ton, and also in constructing the shank and screw-fastening in the manner hereinafter fully recited.

In the accompanying sheet of drawing, Figure 1 represents a side elevation of the buttonshank; Fig. 2, a section of same; Fig. 3, a plan view; Fig. 4, a section of under shell of button; Fig. 5, a section of under shell and shank, showing method of attachment; Fig. 6, a plan view of same; and Fig. 7, side elevation of screw-fastening.

Similar letters of reference indicatelikeparts in the several figures.

A represents the shank of a button, made from brass or other suitable metal, and of any desired size, tubular in its stem, with a collar, (1, formed thereon, and a flange, b, at its base. Screw-threads are formed within this hollow shank, as shown in Fig. 2. A slit is now made in the flange b, anda point or barb, c, bent downward nearly at right angles. (See Figs. 1 and 3.) The under shell of the button B, Fig. 4, is also made from metal, and of a size corresponding to and suitable for that of the shank just described, and having therein a central hole or perforation, 01, around which is raised a lip, c. The shank A is then inserted into the hole or orifice d of the shell, and the entering part of said shank f, which is reduced in size, upset around said collar to, as shown in Fig. 5, in this Way firmly securing the two together. A screw, 9, with a needle suitable for such purpose, is inserted in the garment -to which it is desired to attach the button, the

threads of said screw corresponding with the threads in said shank. By any desirable means the screw is then driven into said shank, and the button is in this way attached to the garment.

Now, it will be found, if an efi'ort be made to unscrew the button therefrom, that the point or barb 0 will enter into the cloth, gathering it up before it, and effectually prevent the unscrewing of the button, which will therefore retain its place in position securely against any danger of accidental detaching. At the same time, when desired, the button may be readily detached by simply unscrewing the fastening therefrom. A cheap and expeditious and secure method of attaching buttons is thus had.

In manufacturing the shanks above described itis probable that the screw-threads would be rolled therein, by which means additional cheapness of construction would be obtained.

Since it is designed to insert the screw-fastening into the button by means of friction instead of by the ordinary screw-driver, the head of the screw 9 will be indented, roughened, or ornamented for the purpose of increasing the friction. 7

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A tubular shank having a collar, to, and screw-thread formed therein, and with a barb, c, on the flange, substantially as described.

2. A tubular buttonshank having a collar, a, andscrew'thread formed therein, substantially as described.

3. A tubular button-shank having the lower portion screw-threaded and the upperplain and of a lesser diameter, and adapted to be turned over and secured to the raised lip of the under shell of the button-head, substantially as described.

. GEORGE J. OAPEWELL.

Witnesses:

H. L. WATTENBERG, G. M. PLYMPTON. 

